<template>
	<div class="app-container">
		<el-form @submit.native.prevent :model="queryParams" ref="queryForm" size="small" :inline="true"
			v-show="showSearch" label-width="68px">
			<el-form-item label="试卷类型" prop="paperType">
				<el-select v-model="queryParams.paperType" placeholder="请选择试卷类型" clearable>
					<el-option v-for="dict in dict.type.paper_type" :key="dict.value" :label="dict.label"
						:value="dict.value" />
				</el-select>
			</el-form-item>
			<el-form-item label="试卷标题" prop="name">
        <el-input
          v-model="queryParams.name"
          placeholder="请输入试卷标题"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
			<el-form-item>
				<el-button type="primary" icon="el-icon-search" size="mini" @click="handleQuery">搜索</el-button>
				<el-button icon="el-icon-refresh" size="mini" @click="resetQuery">重置</el-button>
			</el-form-item>
		</el-form>

		<el-row :gutter="10" class="mb8">
			<el-col :span="1.5">
				<el-button type="primary" plain icon="el-icon-plus" size="mini" @click="handleAdd"
					v-hasPermi="['business:paper:add']">新增</el-button>
			</el-col>
			<el-col :span="1.5">
				<el-button type="success" plain icon="el-icon-edit" size="mini" :disabled="single" @click="handleUpdate"
					v-hasPermi="['business:paper:edit']">修改</el-button>
			</el-col>
			<el-col :span="1.5">
				<el-button type="danger" plain icon="el-icon-delete" size="mini" :disabled="multiple"
					@click="handleDelete" v-hasPermi="['business:paper:remove']">删除</el-button>
			</el-col>
			<el-col :span="1.5">
				<el-button type="warning" plain icon="el-icon-download" size="mini" @click="handleExport"
					v-hasPermi="['business:paper:export']">导出</el-button>
			</el-col>
			<right-toolbar :showSearch.sync="showSearch" @queryTable="getList"></right-toolbar>
		</el-row>

		<el-table v-loading="loading" :data="paperList" @selection-change="handleSelectionChange">
			<el-table-column type="selection" width="55" align="center" />
			<el-table-column label="试卷ID" align="center" prop="id" />
			<el-table-column label="试卷类型" align="center" prop="paperType">
				<template slot-scope="scope">
					<dict-tag :options="dict.type.paper_type" :value="scope.row.paperType" />
				</template>
			</el-table-column>
			<el-table-column label="试卷标题" align="center" prop="name" />
      <el-table-column label="试卷年份" align="center" prop="paperYear" />
			<el-table-column label="操作" align="center" class-name="small-padding fixed-width">
				<template slot-scope="scope">
					<el-button size="mini" type="text" icon="el-icon-edit" @click="handleUpdate(scope.row)"
						v-hasPermi="['business:paper:edit']">修改</el-button>
					<el-button size="mini" type="text" icon="el-icon-delete" @click="handleDelete(scope.row)"
						v-hasPermi="['business:paper:remove']">删除</el-button>
				</template>
			</el-table-column>
		</el-table>

		<pagination v-show="total>0" :total="total" :page.sync="queryParams.pageNum" :limit.sync="queryParams.pageSize"
			@pagination="getList" />

		<!-- 添加或修改试卷对话框 -->
		<el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
			<el-form ref="form" :model="form" :rules="rules" label-width="80px">
				<el-form-item label="试卷标题" prop="name">
					<el-input v-model="form.name" type="textarea" placeholder="请输入内容" />
				</el-form-item>
				<el-form-item label="试卷类型" prop="paperType">
					<el-select v-model="form.paperType" placeholder="请选择试卷类型">
						<el-option v-for="dict in dict.type.paper_type" :key="dict.value" :label="dict.label"
							:value="parseInt(dict.value)"></el-option>
					</el-select>
				</el-form-item>
        <el-form-item label="试卷年份" prop="paperYear">
                          <el-input v-model="form.paperYear" placeholder="请输入试卷年份" />
                        </el-form-item>
			</el-form>
			<div slot="footer" class="dialog-footer">
				<el-button type="primary" @click="submitForm">确 定</el-button>
				<el-button @click="cancel">取 消</el-button>
			</div>
		</el-dialog>
	</div>
</template>

<script>
	import {
		listPaper,
		getPaper,
		delPaper,
		addPaper,
		updatePaper
	} from "@/api/business/paper";
	import {
		allUserquestionss, delUserquestions
	} from "@/api/business/userquestions";

	export default {
		name: "Paper",
		dicts: ['paper_type'],
		data() {
			return {
				// 遮罩层
				loading: true,
				// 选中数组
				ids: [],
				// 非单个禁用
				single: true,
				// 非多个禁用
				multiple: true,
				// 显示搜索条件
				showSearch: true,
				// 总条数
				total: 0,
				// 试卷表格数据
				paperList: [],
				// 弹出层标题
				title: "",
				// 是否显示弹出层
				open: false,
				// 查询参数
				queryParams: {
					pageNum: 1,
					pageSize: 10,
					name: null,
					paperType: null,
        		    paperYear: null
				},
				// 表单参数
				form: {},
				// 表单校验
				rules: {}
			};
		},
		created() {
			this.getList();
		},
		methods: {
			/** 查询试卷列表 */
			getList() {
				this.loading = true;
				listPaper(this.queryParams).then(response => {
					this.paperList = response.rows;
					this.total = response.total;
					this.loading = false;
				});
			},
			// 取消按钮
			cancel() {
				this.open = false;
				this.reset();
			},
			// 表单重置
			reset() {
				this.form = {
					id: null,
					name: null,
					paperType: null,
          paperYear: null
				};
				this.resetForm("form");
			},
			/** 搜索按钮操作 */
			handleQuery() {
				this.queryParams.pageNum = 1;
				this.getList();
			},
			/** 重置按钮操作 */
			resetQuery() {
				this.resetForm("queryForm");
				this.handleQuery();
			},
			// 多选框选中数据
			handleSelectionChange(selection) {
				this.ids = selection.map(item => item.id)
				this.single = selection.length !== 1
				this.multiple = !selection.length
			},
			/** 新增按钮操作 */
			handleAdd() {
				this.reset();
				this.open = true;
				this.title = "添加试卷";
			},
			/** 修改按钮操作 */
			handleUpdate(row) {
				this.reset();
				const id = row.id || this.ids
				getPaper(id).then(response => {
					this.form = response.data;
					this.open = true;
					this.title = "修改试卷";
				});
			},
			/** 提交按钮 */
			submitForm() {
				this.$refs["form"].validate(valid => {
					if (valid) {
						if (this.form.id != null) {
							updatePaper(this.form).then(response => {
								this.$modal.msgSuccess("修改成功");
								this.open = false;
								this.getList();
							});
						} else {
							addPaper(this.form).then(response => {
								this.$modal.msgSuccess("新增成功");
								this.open = false;
								this.getList();
							});
						}
					}
				});
			},
			/** 删除按钮操作 */
			handleDelete(row) {
  const ids = row.id || this.ids;
  this.$modal.confirm('删除操作是不可逆的，是否确认删除？').then(() => {
    // 查询与 slpaper 相关的 userquestions
    return allUserquestionss({ paperId: ids });
  }).then(response => {
    // 打印返回的 userquestions 数据
    const userQuestionIds = response.data.map(item => item.id);
    // 删除所有相关的 userquestions
    const deletePromises = userQuestionIds.map(id => {
      return delUserquestions(id);
    });
    return Promise.all(deletePromises);
  }).then(() => {
    // 删除 paper
    return delPaper(ids);
  }).then(() => {
    this.getList();
    this.$modal.msgSuccess("删除成功");
  }).catch(error => {
    console.error('删除过程中发生错误:', error);
  });
},
			/** 导出按钮操作 */
			handleExport() {
				this.download('business/paper/export', {
					...this.queryParams
				}, `paper_${new Date().getTime()}.xlsx`)
			}
		}
	};
</script>